> complex conjugate of Ξ [...] divide that by, say, Ξ
This is not a real concern; it was done by Barry Mazur as a joke, hoping to provoke Serge Lang into using his catchphrase "this notation sucks", so Mazur could present him with a prepared "This Notation Sucks" tee-shirt. See the Paul Vojta section of http://www.ams.org/notices/200605/fea-lang.pdf
In before
王
becomes a thing.
主 - U+4E3B MATHEMATICAL XI BAR WITH GRAVE ACCENT
Re:Rare Greek Variables
by dustintrex on Sunday November 28, 2021 @12:54AM
(#29366548)
国 U+56FD CONTAINERIZED PRODUCTION READY MATHEMATICAL XI BAR WITH SUBPRIME INDICATOR
It looks like a mess of lines is what it looks like.